Presuppositionalism?

Based on a student’s questioning, I’m wondering whether “presuppositionalism” is the best term to describe what Vantillians are after. We don’t, after all, come up with some kind of set of axioms or theological idea “prior” to receiving revelation. We can talk about making the Triune God our “starting point” as much as we want, but faith in the Triune God is not in fact the “starting point” of our thinking (in either a chronological or logical sense). I like Frame’s revisionist view that “presuppositions” are really “basic commitments,” but that still seems to individualistic to me. I’d rather think of how we can ecclesiologize Van Til: Instead of saying that “all our thinking is grounded in the presupposition of the Triune God of Scripture,” we might say “as Christians we think and act from within the Church, which is the body of Christ and the community of worshipers of the Triune God.” This moves Van Til in the direction of postliberals and postmoderns, but that’s not a bad move in this case I think.